环酸盐具有理想的特性,用于 (68) Ga PET成像剂的加工
Eszter Boros1, Cara L Ferreira, Jacqueline F Cawthray
1Medicinal Inorganic Chemistry Group, Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, British Columbia V6T 1Z1, Canada.
Journal of the American Chemical Society
|October 21, 2010
概括
新的合物,H(2)dedpa,在核医学诊断中为-67和-68放射性同位素提供了优越的稳定性和快速协调,性能优于DOTA.
科学领域:
- 放射化学 放射化学是指辐射化学.
- 核医学是一种核医学.
- 化化学 化化学
背景情况:
- 像NOTA和DOTA这样的氨基碳酸盐宏循环通常用于核医学中的放射性金属化.
- 对于诊断应用来说,需要替代性合物,其稳定性和标记动力学有所改善.
研究的目的:
- 研究的放射性同位素的NOTA和DOTA的新型双功能酸盐替代品.
- 为了评估线性N(4) O(2) 合物H(2) 与-67和-68.2的协调特性和稳定性.
主要方法:
- 在不同度和条件下研究了 (67) Ga和 (68) Ga与H ((2) 滴滴的协调.
- 通过与人类阿波转移素的竞争实验,评估了[(67) Ga(dedpa) ](+) 复合物的稳定性.
- 合成和表征了H(2)dedpa的双功能版本,并评估了它们的-67协调.
主要成果:
- 在室温下10分钟内,H(2)dedpa数量坐标 (67) Ga 在10分钟内.
- 对 (67) Ga和 (68) Ga的定量协调是在连接物度低至10~-7) M.的情况下实现的.
- 在不经过净化的情况下,获得了 (68) Ga 复合物的高特异活性 (高达 9.8 mCi nmol(-1)).
- 在竞争研究中,[67]Ga[dedpa][+]复合体在2小时后没有被分解.
- 双功能H(2) dedpa衍生品也显示出与 (67) Ga.快速协调.
- 与DOTA相比,新型合物表现出更高的稳定性.
结论:
- 在核医学诊断中,H(2) dedpa代表了的放射性同位素的有前途的基板酸盐.
- 这些新的酸盐在快速标记动力学和比DOTA更高的稳定性方面具有优势.
- 开发双功能H(2) dedpa合物为有针对性的放射性核素输送开辟了道路.
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